SUN HYDRAULICS
RBACQBV

***Disclaimer: The following summary contains information gathered from various sources such as product descriptions, technical specifications and catalogs. While efforts have been made to provide accurate details, inaccuracies may occur. It is advised to verify all information by contacting Sun Hydraulics directly.***
The Sun Hydraulics RBACQBV (RBACQBV) is a direct-acting, pilot relief cartridge designed to remotely control the pressure setting of other pilot-operated valves. This valve is specifically limited to pilot flow capacity and should be used in conjunction with higher flow valves for optimal performance. It features EPDM seals suitable for systems using phosphate ester fluids, as exposure to petroleum-based fluids can damage these seals. The main stage orifice is protected by a 150-micron stainless steel screen, making it suitable for load holding applications. Notably, back pressure on the tank port (port 2) adds directly to the valve setting at a 1:1 ratio. The RBACQBV model incorporates Sun's floating style construction, which minimizes the risk of internal parts binding due to excessive installation torque or cavity/cartridge machining variations. This cartridge valve has a cavity size of T-10A and is part of Series 1, with a capacity of 0.25 gpm (1 L/min) and a maximum operating pressure of 5000 psi (350 bar). Its typical response time is approximately 2 milliseconds, with maximum valve leakage at 110 SUS (24 cSt) being about 5 drops per minute (0.3 cc/min). The valve's adjustment range allows for up to five clockwise turns to increase settings, with specific hex sizes and torque specifications provided for installation and adjustment components. It weighs approximately 0.30 lb (0.15 kg) and includes a Viton seal kit identified as part number 990010006. This product finds its application in scenarios where direct-acting valves are preferred due to their fast response, dirt tolerance, stability, and robustness compared to pilot-operated variants that are moderately fast but offer easier adjustability and low-pressure rise versus flow characteristics.